Notes: ∑ Beginning in 1977, the U.S. Government's fiscal year is October 1 through September 30 (forexample, fiscal year 2011 is October 2010 through September 2011). ∑ Data in this table are developedusing the following conversion factors (which in most cases are different from those in TablesA1-A6)ócoal: 24.580 million Btu/short ton; natural gas: 1,031 Btu/cubic foot; aviation gasoline: 5.250million Btu/barrel; fuel oil: 5.8254 million Btu/barrel; jet fuel: 5.460 million Btu/barrel; liquefied petroleumgases: 4.011 million Btu/barrel; motor gasoline: 5.250 million Btu/barrel; electricity: 3,412 Btu/kilowatthour;and purchased steam: 1,000 Btu/pound. ∑ Data include energy consumed at foreign installations and inforeign operations, including aviation and ocean bunkering, primarily by the U.S. Department of Defense.U.S. Government energy use for electricity generation and uranium enrichment is excluded. ∑ Totals maynot equal sum of components due to independent rounding.